Circl
Meet your brain, live smarter.
Circl launched on October 25, 2022 with 84 votes, #507 of 3,153 launches that month and more than 75% of that year's launches. The site was not reachable when checked in September 2026.
What it does
Are you are using your brain to its fullest potential? The Circl headset allows you to track how your mental ability is changing over time. Measure when you are at your smartest, when you need a break, and what works best to sharpen your cognition.
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